EP 0635077 A1 19950125 - APPARATUS AND METHOD FOR PRODUCING A WEB OF THERMOPLASTIC FILAMENTS.
Title (en)
APPARATUS AND METHOD FOR PRODUCING A WEB OF THERMOPLASTIC FILAMENTS.
Title (de)
ANLAGE UND VERFAHREN ZUR HERSTELLUNG EIN VLIESSTOFF AUS THERMOPLASTISCHEN FILAMENTEN.
Title (fr)
APPAREIL ET PROCEDE PERMETTANT DE PRODUIRE UNE NAPPE DE FILAMENTS THERMOPLASTIQUES.
Publication
Application
Priority
- US 9302917 W 19930329
- US 86704292 A 19920410
Abstract (en)
[origin: WO9321370A1] A slot draw attenuator apparatus and method are provided for producing webs of spunbonded thermoplastic filaments having improved cover even at low basis weights. The filaments are introduced to a slot draw attenuator having corona electrodes mounted in an elongate insulator bar and staggered and spaced along one wall of the attenuator slot near the exit end thereof. The corona electrodes are electrically connected to a high voltage source. The opposing wall of the slot is grounded. A corona is created in the attenuator slot so that the filaments are charged as they exit the attenuator. The electrostatic charge induces repelling forces in the filaments so that the filaments spread before they are randomly deposited upon a forming belt.
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
D01D 5/098 (2013.01 - EP); D04H 3/16 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9321370 A1 19931028; AT E140494 T1 19960815; AU 4044593 A 19931118; BR 9306222 A 19980630; CA 2133553 A1 19931028; CA 2133553 C 19990216; DE 69303711 D1 19960822; DE 69303711 T2 19970220; DK 0635077 T3 19961125; EP 0635077 A1 19950125; EP 0635077 B1 19960717; ES 2092304 T3 19961116; JP 3007157 B2 20000207; JP H07505687 A 19950622; KR 100189396 B1 19990601; KR 950701021 A 19950220; MX 9302051 A 19940729; NO 943813 D0 19941007; NO 943813 L 19941007; US 5397413 A 19950314
DOCDB simple family (application)
US 9302917 W 19930329; AT 93911563 T 19930329; AU 4044593 A 19930329; BR 9306222 A 19930329; CA 2133553 A 19930329; DE 69303711 T 19930329; DK 93911563 T 19930329; EP 93911563 A 19930329; ES 93911563 T 19930329; JP 51836693 A 19930329; KR 19940703597 A 19941010; MX 9302051 A 19930407; NO 943813 A 19941007; US 86704292 A 19920410